Sales and Trade

Bukhari :: Book 3 :: Volume 34 :: Hadith 279

Narrated 'Aisha:

The Prophet said, "If a woman gives in charity from her house
meals without wasting (i.e. being extravagant), she will get the
reward for her giving, and her husband will also get the reward for
his earning and the storekeeper will also get a similar reward. The
acquisition of the reward of none of them will reduce the reward of
the others."